2004-2009 Honda TRX450R/TRX450ER Service Manual, Page 233Get this manual
CYLINDERPISTON INSPECTION CYLINDER Inspect the cylinder wall for scratches or wearMeasure the cylinder I.Dat three levels in the and axisTake the maximum reading to determine the cylinder wearSERVICE LIMITS: '04'05; 94.05 mm (3.703 in) After '05; 96.05 mm (3.781 in) Calculate the cylinder-to-piston clearanceRefer to page 12-8 for measurement of the piston O.DSERVICE LIMITS: '04-'05; 0.19 mm (0.007 in After '05; 0.18 mm (0.007 in) Calculate the cylinder for taper and out-of-round at three levels in an and axisTake the maximum reading to determine the taper and out-of-roundSERVICE LIMITS: Taper: 0.05 mm (0.002 in) Out-of-round: 0.05 mm (0.002 in) TOPMIDDLE